Question

solve each quadratic equation if the solutions are imaginary, write in a(plus or minus_+)bi form
5x^2-6x+3=0
8x^2-5x+2=0
4x^2+20x+28=0

Answer 1

how are you supposed to solve them?
using the quadratic formula, or factoring, or "completing the square" or ?

Answer 2

using the quadratic formula

Answer 3

then those are simple
just plug and chug \(\large {
\textit{quadratic formula}\\

\begin{array}{llll}
{\color{blue}{ 5}}x^2{\color{red}{ -6}}x{\color{green}{ +3}}=0\\
{\color{blue}{ 8}}x^2{\color{red}{ -5}}x{\color{green}{ +2}}=0\\
{\color{blue}{ 4}}x^2{\color{red}{ +20}}x{\color{green}{ +28}}=0
\end{array}
\qquad \qquad
x= \cfrac{ - {\color{red}{ b}} \pm \sqrt { {\color{red}{ b}}^2 -4{\color{blue}{ a}}{\color{green}{ c}}}}{2{\color{blue}{ a}}}
}\)

Answer 4

\[6\pm \sqrt{-24}\over 10\] and thats as far as ive gotten for the first one

Answer 5

where do you go from there